Dielectric porcelain composition and dielectric resonator using the same
CA 1268035 C · Owner: Ube Industries, Ltd. · Inventors: Fujimoto, Tetsuya; Kitoh, Ryozo; Hitaka, Mikio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dielectric resonator to be advantageously used in C.5 - 6 GHz band and having a large unloaded Q value an adequate relative dielectric constant a good stability, of ?f and a superior linearity of temperature characteristic of the resonance frequency, may be constituted by the dielectric porcelain composition expressed by the formula BaxSryCaz(Zn1/3Nb2/3)1-tTitO3, in which x+y+z=1 x is within the range of 0 to 0.5, y is within the range of 0.5 to 0.999, z is within the range of 0.001 to 0.20 and t is within the range of 0.001 to 0.25.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.